[Bug libgomp/28468] OpenMP-parallelized program crashes when OMP_NUM_THREADS > 1

["bruno at clisp dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #1 from bruno at clisp dot org  2006-11-07 14:36 -------
It's still reproducible with gcc-4.2-20061031:

$ export OMP_NUM_THREADS=2
$ gdb a.out 
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This GDB was configured as "i686-pc-linux-gnu"...Using host libthread_db
library "/lib/libthread_db.so.1".

(gdb) run
Starting program: /dev/shm/a.out 
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 4983)]
[New Thread 32769 (LWP 4984)]
[New Thread 16386 (LWP 4985)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16386 (LWP 4985)]
gomp_iter_dynamic_next (pstart=0xbf7ffa94, pend=0xbf7ffa98) at
../../../gcc-4.2-20061031/libgomp/iter.c:189
189       start = ws->next;
(gdb) where
#0  gomp_iter_dynamic_next (pstart=0xbf7ffa94, pend=0xbf7ffa98) at
../../../gcc-4.2-20061031/libgomp/iter.c:189
#1  0x4001ca78 in gomp_loop_dynamic_next (istart=0xbf7ffa94, iend=0xbf7ffa98)
at ../../../gcc-4.2-20061031/libgomp/loop.c:248
#2  0x080486ed in main.omp_fn.0 ()
#3  0x4001de5d in gomp_thread_start (xdata=0xbfffe580) at
../../../gcc-4.2-20061031/libgomp/team.c:108
#4  0x4003bfe6 in pthread_start_thread (arg=0xbf7ffbe0) at manager.c:310
#5  0x4003c07f in pthread_start_thread_event (arg=0xbf7ffbe0) at manager.c:334
#6  0x4014e0aa in clone () from /lib/libc.so.6


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28468